I went on this math website called “letsanswers” and it gave me like an alert thing saying my iphone has a virus is this real? how do I check

What signals you that factoring by grouping is the best method to use when factoring a problem?

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.